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Improve EntityTargetLivingEntityEvent for 1.16 mobs

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CraftBukkit has a bug in their implementation and is incorrectly handling forget
Also adds more target reasons for why it forgot target.

Fixes #4042
This commit is contained in:
Aikar 2020-08-06 19:38:49 -04:00
parent 9788250b10
commit 6742309074
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GPG Key ID: 401ADFC9891FAAFE
2 changed files with 59 additions and 39 deletions
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59
Spigot-Server-Patches/0532-Improve-EntityTargetLivingEntityEvent-for-1.16-mobs.patch Normal file
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@ -0,0 +1,59 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Fri, 3 Jul 2020 15:03:33 -0700
Subject: [PATCH] Improve EntityTargetLivingEntityEvent for 1.16 mobs
CraftBukkit has a bug in their implementation and is incorrectly handling forget
Also adds more target reasons for why it forgot target.
diff --git a/src/main/java/net/minecraft/server/BehaviorAttackTargetForget.java b/src/main/java/net/minecraft/server/BehaviorAttackTargetForget.java
index 254a4afeed2148fc1a8d698c90ba0b98eda01687..51203fd30bfee57ef8d52d0360a64a7e1d6c65a3 100644
--- a/src/main/java/net/minecraft/server/BehaviorAttackTargetForget.java
+++ b/src/main/java/net/minecraft/server/BehaviorAttackTargetForget.java
@@ -26,15 +26,15 @@ public class BehaviorAttackTargetForget<E extends EntityInsentient> extends Beha
protected void a(WorldServer worldserver, E e0, long i) {
if (a((EntityLiving) e0)) {
- this.d(e0);
+ this.d(e0, org.bukkit.event.entity.EntityTargetEvent.TargetReason.FORGOT_TARGET); // Paper
} else if (this.c(e0)) {
- this.d(e0);
+ this.d(e0, org.bukkit.event.entity.EntityTargetEvent.TargetReason.TARGET_DIED); // Paper
} else if (this.a(e0)) {
- this.d(e0);
+ this.d(e0, org.bukkit.event.entity.EntityTargetEvent.TargetReason.TARGET_OTHER_LEVEL); // Paper
} else if (!IEntitySelector.f.test(this.b(e0))) {
- this.d(e0);
+ this.d(e0, org.bukkit.event.entity.EntityTargetEvent.TargetReason.TARGET_INVALID); // Paper
} else if (this.b.test(this.b(e0))) {
- this.d(e0);
+ this.d(e0, org.bukkit.event.entity.EntityTargetEvent.TargetReason.TARGET_INVALID); // Paper
}
}
@@ -58,17 +58,20 @@ public class BehaviorAttackTargetForget<E extends EntityInsentient> extends Beha
return optional.isPresent() && !((EntityLiving) optional.get()).isAlive();
}
- private void d(E e0) {
+ private void d(E e0, EntityTargetEvent.TargetReason reason) {
// CraftBukkit start
- EntityLiving old = e0.getBehaviorController().getMemory(MemoryModuleType.ATTACK_TARGET).orElse(null);
- EntityTargetEvent event = CraftEventFactory.callEntityTargetLivingEvent(e0, old, (old != null && !old.isAlive()) ? EntityTargetEvent.TargetReason.TARGET_DIED : EntityTargetEvent.TargetReason.FORGOT_TARGET);
+ // Paper start - fix this event
+ //EntityLiving old = e0.getBehaviorController().getMemory(MemoryModuleType.ATTACK_TARGET).orElse(null);
+ EntityTargetEvent event = CraftEventFactory.callEntityTargetLivingEvent(e0, null, reason);
if (event.isCancelled()) {
return;
}
- if (event.getTarget() != null) {
+ // comment out, bad logic - bad
+ /*if (event.getTarget() != null) {
e0.getBehaviorController().setMemory(MemoryModuleType.ATTACK_TARGET, ((CraftLivingEntity) event.getTarget()).getHandle());
return;
- }
+ }*/
+ // Paper end
// CraftBukkit end
e0.getBehaviorController().removeMemory(MemoryModuleType.ATTACK_TARGET);
}

39
Spigot-Server-Patches/0532-added-EntityTargetLivingEntityEvent-to-1.16-mobs.patch
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@ -1,39 +0,0 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Fri, 3 Jul 2020 15:03:33 -0700
Subject: [PATCH] added EntityTargetLivingEntityEvent to 1.16 mobs
1.16 added a different behavior system for the new mobs
diff --git a/src/main/java/net/minecraft/server/BehaviorAttackTargetForget.java b/src/main/java/net/minecraft/server/BehaviorAttackTargetForget.java
index 254a4afeed2148fc1a8d698c90ba0b98eda01687..643e996b87acd95d6fecf9a3883a0744f4d223a9 100644
--- a/src/main/java/net/minecraft/server/BehaviorAttackTargetForget.java
+++ b/src/main/java/net/minecraft/server/BehaviorAttackTargetForget.java
@@ -26,15 +26,22 @@ public class BehaviorAttackTargetForget<E extends EntityInsentient> extends Beha
protected void a(WorldServer worldserver, E e0, long i) {
if (a((EntityLiving) e0)) {
- this.d(e0);
+ handleEvent(e0, org.bukkit.event.entity.EntityTargetEvent.TargetReason.FORGOT_TARGET); // Paper
} else if (this.c(e0)) {
- this.d(e0);
+ handleEvent(e0, org.bukkit.event.entity.EntityTargetEvent.TargetReason.TARGET_DIED); // Paper
} else if (this.a(e0)) {
- this.d(e0);
+ handleEvent(e0, org.bukkit.event.entity.EntityTargetEvent.TargetReason.TARGET_OTHER_LEVEL); // Paper
} else if (!IEntitySelector.f.test(this.b(e0))) {
- this.d(e0);
+ handleEvent(e0, org.bukkit.event.entity.EntityTargetEvent.TargetReason.TARGET_INVALID); // Paper
} else if (this.b.test(this.b(e0))) {
- this.d(e0);
+ handleEvent(e0, org.bukkit.event.entity.EntityTargetEvent.TargetReason.TARGET_INVALID); // Paper
+ }
+ }
+ // Paper start
+ private void handleEvent(E entity, org.bukkit.event.entity.EntityTargetEvent.TargetReason reason) {
+ org.bukkit.event.entity.EntityTargetLivingEntityEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callEntityTargetLivingEvent(entity, null, reason);
+ if (!event.isCancelled()) {
+ this.d(entity);
}
}